<sys/conf.h>: Move SPECNAMELEN to <sys/param.h>.
Some dports and also stuff in our tree depend on it being public, which
all compensate with local defines for now, some of them not having been
adjusted when SPECNAMELEN was bumped from 15 to 63, such as in
sysutils/{mfi,mpt}d. Patches for these ports have been submitted.
They all could have got at it by defining _KERNEL_STRUCTURES before
including <sys/conf.h> but that didn't catch up it seems.
It's public in <sys/param.h> in FreeBSD and I see no reason why we
shouldn't follow.
Reported-by: aly
UnifiedSplitRaw
